1892. ] Current Literature. 335 
angiosperms. In grouping the Metasperme Treub’s conclusions from 
the study of Casuarina are accepted, and the groups Chalazagamez 
and Porogamez adopted, dependent upon the absence or presence ofa 
micropylar canal. The Porogamez contain monocotyledons and di- 
cotyledons; the latter being further subdivided into Archichlamydex 
and Metachlamydeze, the former being a combination of Polypetalez 
and Apetal, the latter the Gamopetale. 
Special attention is called to the definitions of Metasperme and 
Archispermz (Gymnosperme), which includes our knowledge of the 
difference in the origin of the so-called “endosperm” in the two cases 
and the still somewhat obscure notions as to the sexual origin of the 
angiospermous “endosperm.” Our present knowledge and theory 
with reference to these very important but very recondite distinctions are 
well and compactly put, but we may be pardoned the question whether 
the language is not too severely technical to be addressed “not to any 
coterie of savants in some special line of science, but to the genéral 
public of Minnesota.” Professor MacMillan has undertaken a very 
Interesting piece of work, and with a vigor of style and freedom from 
Testraint that will surely bring useful results. 
; Minor Notices. 
Dr. N. L. Brrrron has published a synoptical list, including syn- 
onymy, range, and descriptions of new species and varieties of the 
1 
“Oita N. L.—A list of the species of the genera Scirpus and Rhy sang 
@ occurring in North America. Contrib. Herb. Columbia Coll. no. 26. Re- 
Printed from Trans. N. Y. Acad. Sci. XI, p 
Tre) of Yu pone 
i Base, WiLL1am.—Detail illustrations of Yucca and description of Aga) h 
: °researa From the 3d Ann. Rep. of the Mo. Bot. Garden, PP. 159-168 wit 
Page plates. Issued May 28, 1892. 
